React's useEffect is a powerful hook. But it is often used when it is not needed. This guide helps you decide when to use it and when to skip it. You will learn better ways to handle data transformation and user events. Follow the official best practices from the React docs. Use event handlers for user actions. Use useMemo for expensive calculations. Reset component state with the key prop.
Only use Effects for external systems like browser APIs or non-React widgets. Your React code will become simpler and faster. You will avoid common mistakes and write cleaner code with fewer bugs.
Global
mkdir -p ~/.claude/skills/react-useeffectProject
mkdir -p .claude/skills/react-useeffectSource Repository
Improve Codebase Architecturemattpocock/skills
Scan your codebase for architecture improvements with visual reports and pick one to refactor
Web Design Guidelinesvercel-labs/agent-skills
Review your UI code for compliance with web interface guidelines
Caveman Reviewjuliusbrussee/caveman
Ultra-compressed one-line code review comments that cut noise
Zoom Outmattpocock/skills
Get a big picture view of your code with a simple map of modules and callers
Codebase Designmattpocock/skills
Create deep modules with tiny interfaces and lots of hidden logic for testability
Requesting Code Reviewobra/superpowers
Catch code issues early with focused automated reviews before every merge
Request Refactor Planmattpocock/skills
Plan safe code refactors with tiny commits and clear GitHub issues
Receiving Code Reviewobra/superpowers
Think first, then code. Verify feedback before making changes. Stay objective